Real-time notification of presence availability changes

ABSTRACT

Preferred embodiments of the present invention provide a system and method for providing presence and availability status information of a first user to a second user. The system includes a presence availability server for storing presence and availability status information of the first user. The presence availability server is configured to detect a change in the presence and availability status of the first user. The presence availability server also informs a notification server of a change in the presence and availability status of the first user. The notification server sends a notification message to a communication device of the second user. The notification message contains current presence and availability status information of the first user. Other systems and methods are also provided.

TECHNICAL FIELD

The present invention is generally related to personal communicationsand, more particularly, is related to presence and availability status.

BACKGROUND OF THE INVENTION

Presence and availability are terms used to describe a present abilityof an individual to communicate. Presence is an ability of an individualto communicate in real time, and availability is an individual'swillingness to communicate in real time. In communications, it isadvantageous to know whether a potential recipient of a communicationmessage is present and available, i.e., available to receive and respondto the message before initiating the transmission of the message. Bymaking the presence and availability of individual users known beforeany communication is attempted, a realtime communications environment isfacilitated that is more effective and less obtrusive than conventionalcommunication mediums. Clearly, the communication message that is sentto an addressee that is known to be present and available is more likelyto be received promptly than a conventional message. For example, oftentimes, conventional telephone calls are forwarded to a person'svoicemail and are never returned.

Instant messaging (IM) is one communication medium that employs presenceand availability technology. An instant messaging network recognizeswhen a user is “present” on the network. Accordingly, the network sendsnotification to other users (usually members of a “buddy list”) that arealso logged on the network that the user is “present.” Further, instantmessaging lets a user display custom status messages to his “buddies”online about the user's “availability.” For example, a user can specifyhis availability status as being “busy, not taking messages.” Thereforeanother user on the “buddy list” that is connected to the instantmessaging network will be notified that although the user is present onthe network, he is not available for receiving messages.

Presence and availability information is most useful when an individualshares his or her online status with a trusted group of users. Acommunication message sent to someone who is readily present andavailable is less obtrusive, when the addressee has made himself orherself available to the communication. However, today's services mostlyfocus on a “pull” model for users to retrieve others' presence andavailability status. Typically, a user has to log on a communicationnetwork before the user is notified about the presence and availabilityof other users on the network. Thus, a heretofore unaddressed needexists in the industry to address the aforementioned deficiencies andinadequacies.

SUMMARY OF THE INVENTION

Preferred embodiments of the present invention provide a system andmethod for providing presence and availability status information of afirst user (User1) to a second user (User2). The system includes apresence availability server for storing presence and availabilitystatus information of User1. The presence availability server isconfigured to detect a change in the presence and availability status ofUser1. The presence availability server also informs a notificationserver of a change in the presence and availability status of User1. Thenotification server generates a notification message for a communicationdevice of User2. The notification message contains current presence andavailability status information of User1.

The preferred embodiment of the present invention can also be viewed asproviding a method for supplying presence and availability statusinformation of User1 to User2. In this regard, one embodiment of such amethod, among others, can be broadly summarized by the following steps:storing presence and availability status of User1; detecting a change inthe presence and availability status of User1; generating a notificationmessage for User2, wherein the notification message contains the currentpresence and availability status of User1.

Other systems, methods, features, and advantages of the presentinvention will be or become apparent to one with skill in the art uponexamination of the following drawings and detailed description. It isintended that all such additional systems, methods, features, andadvantages be included within this description and the scope of thepresent invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the invention can be better understood with reference tothe following drawings. The components in the drawings are notnecessarily to scale, emphasis instead being placed upon clearlyillustrating the principles of the present invention. Moreover, in thedrawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a block diagram of the presence availability notificationsystem of one preferred embodiment of the present invention.

FIG. 2 is a flowchart illustrating the functionality of the presenceavailability system of FIG. 1.

FIG. 3 is a service flow diagram illustrating interactions for arepresentative embodiment of the presence availability system of FIG. 1.

FIG. 4 is a service flow diagram illustrating interactions for arepresentative embodiment of the presence availability system of FIG. 1.

FIG. 5 is a service flow diagram illustrating interactions for arepresentative embodiment of the presence availability system of FIG. 1.

FIG. 6 is a service flow diagram illustrating interactions for arepresentative embodiment of the presence availability system of FIG. 1.

FIG. 7 is a service flow diagram illustrating interactions for arepresentative embodiment of the presence availability system of FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 is a block diagram of the presence availability notificationsystem 100 of one preferred embodiment of the present invention. Thepresence availability notification system notifies User2 of any changesin the presence and availability status (“online status”) of User1. Thesystem 100 includes a presence availability server 110 that monitors theonline status of User1 in regard to a communication device of User1 120.The communication device 120 includes, among others, any device capableof relaying the presence and availability status of User1, so that thepresence and availability status of User1 can be made known to others.The communication device 120 could be, among others, a computer, a PSTNtelephone, a mobile telephone, a pager, a personal digital assistant,etc. The communication device 120 may have a client program installed onthe device to enable particular communication technologies, such asemail, instant messaging, etc.

The presence availability server 110 maintains current presence andavailability data of User1 as the presence availability server receivesupdates from the communication device 120. The presence availabilityserver 110 stores presence and availability data for User1 in a presenceavailability database 115. The presence availability database 115 islocated on the presence availability server 110. Alternatively, in otherembodiments, the presence availability database 115 could be incommunication with and located separately from the presence availabilityserver 110. The communication device of User1 120 notifies the presenceavailability server 110 of a change in the presence and availabilitystatus of User1. The communication device of User1 communicates with thepresence availability server 110 via a communication network 130. Thecommunication network 130 could be a PSTN telephone network, theInternet, or any other network supporting communication technologies.

The presence availability notification system 100 also includes anotification server 140 that receives update messages from the presenceavailability server 110 concerning a change in the presence andavailability status of User1. The notification server 140 then sends anotification message to the communication device 150 of User2 to notifyUser2 of a change in the online status of User1. The User2 communicationdevice 150 includes any device that User2 can receive a notificationmessage with, such as a PSTN phone, an email client, an instantmessaging client, etc.

The notification server 140 contains a profile database 145. The profiledatabase 145 contains profiles of users of the notification server 140,such as User1 and User2. Alternatively, the profile database 145 couldbe stored separately from the notification server 140 on another serverthat is in communication with the notification server 140. Thenotification server 140 preferably generates and transmits notificationmessages for receipt by the communication device 150 of User2 by usingthe Internet 160. In other embodiments, however, any type ofcommunication network, besides the Internet 160, could be used.

Particularly, in one implementation, the notification server 140 sends anotification message to a messaging server 170 that is connected to theInternet 160. The messaging server 170 then forwards the notificationmessage to the communication device 150 of User2 via a communicationnetwork 180. The messaging server 170 supports a communicationtechnology, such as email, instant messaging, voiceXML, WAP, etc. Thecommunication network 180 could be a PSTN telephone network, theInternet, or any other network supporting the communication technologyof the messaging server 170. For example, if the messaging server 170 isan instant messaging server 170, then the communication network 180could be the Internet, for example. Correspondingly, if the messagingserver is a voiceXML server, then the communication network 180 could bea PSTN network.

The overall operation of the presence availability notification system100 (or method 200) will be described with reference to FIG. 2, whichdepicts the functionality of a preferred implementation of the presenceavailability notification system 100. It should be noted that, in somealternative implementations, the functions noted in the various stepsmay occur out of the order depicted in the figure. For example, twosteps shown in succession in the figures may, in fact, be executedsubstantially concurrently or the steps may be executed in reverse orderdepending upon the functionality involved, as would be understood by onewith reasonable skills in the art.

FIG. 2 is a flowchart depicting a representative embodiment of a method200 for notifying User2 of the presence and availability (online) statusof User1. In block 210, a profile for User1 is created and stored in aprofile database 145. The creation of the profile and the entering ofuser information for User1 may be facilitated by the use of web page andforms contained therein. In the profile of User1, User1 specifies auserID and a password. The userID and password are needed by User1 toaccess his profile and to update his profile information. In block 220,User1 designates individuals that he or she wants to monitor his or heronline status. In this particular embodiment of the invention, User1gives out his userID to User2. In other embodiments of the inventions,User1 could also be required to give out his or her password to User2,so that User1 is assured that only authorized persons are monitoring hisor her online status.

In block 230, User2 specifies notification preferences. Again, theentering of information for User2 may be facilitated by the use of webpages. Notification preferences are the necessary contact informationfor delivering a notification message to User2. The notificationpreferences may include the email address of User2, phone number, WAPaddress, instant messaging address, etc. User2 may have more than onecontact address specified, so that User2 can receive more than onenotification message for a presence and availability status change.Typically, the notification preferences are included in a profile forUser2 that is created and stored in the profile database 145.Additionally in the profile, User2 specifies a userID and password. TheuserID and password are needed by User2 to access his profile and toupdate his profile information.

In block 240, User2 registers to monitor the presence and availabilitystatus of User1. To do so, User2 specifies the userID of User1 in theprofile of User2. The profile of User2 is stored in the profile database145. Additionally, the presence availability server 110 registers thatthe online status of User1 is being monitored. To initiate the sendingof a notification message, a change occurs in the presence andavailability status of User1. For instance, if User1 terminated aninstant messaging session, his or her online status changes from being“present” for instant messaging communications to being “not present.”Therefore, a notification message will be sent to notify User2 of thischange in the online status of User1. The current presence andavailability data of User1 are maintained in a presence availabilitydatabase 115 located in a presence availability server 110.

The presence availability server 110 detects the change in the presenceand availability status of User1, as depicted in block 250. Forinstance, the communication device 120 of User1 may inform the presenceavailability server 110 of a change in the online status of User1.Alternatively, the presence availability server 110 could poll thecommunication device 120 to determine the online status of User1. Instep 255, the presence availability server 110 determines from thepresence availability database 115 that User1 is being monitored by atleast one other user, so the presence availability server 110 informsthe notification server 140 of the change in the presence andavailability status of User1. Otherwise, the presence availabilityserver 110 would not notify the notification server 140 of statuschanges for User1. After a change, the notification server 140 retrievesfrom the profile database 145 the notification preferences from theprofiles of users who have the userID of User1 in their profile.

Therefore, the profile of User2 is retrieved by the notification server140, since User2 is monitoring the online status of User1 and has theuserID of User1 in his or her profile. From the profile of User2, thenotification server obtains the notification preferences of User2, asdepicted in block 260. The notification preferences specify the mannerfor delivering a notification message to User2. For example, thenotification preferences may specify that a notification message is tobe delivered at the email address of User2. Accordingly in block 270, anotification message detailing the presence and availability statuschange of User1 is sent to User2 in conformity with the notificationpreferences of User2. In the notification message, the presence andavailability status of User2 is provided by the presence availabilityserver.

In an alternative representative implementation of the presentinvention, User1 designates in his profile the users that he or shewants notified about the changes in his or her online status. Then afterthe notification server 140 is informed about a change in the onlinestatus of User1, the notification server 140 sends notification messagesto the users designated in the profile of User1. The notificationmessages are delivered according to the notification preferences in thevarious profiles designated in the profile of User1.

In another embodiment, User1 designates in the presence availabilitydatabase 115 the users that User1 wants notified about changes in theonline status of User1. Accordingly, the presence availability server110 notifies the notification server of a change in the presence andavailability status of User1. The presence availability server 110 alsoinstructs the notification server 140 on which individuals to sendnotifications to, since this information is stored in the presenceavailability database 115. The notification messages are deliveredaccording to the notification preferences in the individual's profile inthe profile database 145.

It should also be noted that the functions provided by the presenceavailability server & presence availability database and thenotification server & profile database do not have to be provided byseparate network devices. The respective functions could be performed bya single server & database.

FIG. 3 is a service flow diagram for a representative implementation ofone preferred embodiment of the present invention. FIG. 3 depictscertain interactions between the notification server 140 & profiledatabase 145 and the presence availability server 110 & presenceavailability database 115. Particularly, responsive to detecting achange in the presence and availability status of User1 and anindication of monitoring by another user, the presence availabilityserver informs the notification server about the change in the presenceand availability status of User1. In this embodiment of the invention,User1 has registered User2 in the profile database 145 as a monitor ofthe presence and availability status of User1. In FIG. 3, once thenotification server 140 is informed of a status change in the presenceand availability status of User1, the notification server 140 inspectsthe profile database 145 and determines the user(s), such as User2, thatare registered to monitor the presence and availability status of User1.

FIG. 4 is a service flow diagram for a representative implementation ofone preferred embodiment of the invention for transmitting notificationmessages using instant messaging technology. FIG. 4 depicts theinteractions between the notification server 140 & profile database 145and the communication device 150 of User2, after a status change hasbeen detected, as previously shown in FIG. 3. Here, the communicationdevice 150 of User2 contains an instant messaging client 155. Theinstant messaging client 155 could be installed on a computer, apersonal digital assistant (PDA), or any other device capable ofproviding instant messaging communications. In FIG. 4, the first actionshown is the retrieval of the notification preferences specified in theprofile of User2 from the profile database 145. From the notificationpreferences, the instant messaging address of User2 is obtained. Theprofile database 145 then transmits the instant messaging address ofUser2 to the notification server 140.

With the instant messaging address of User2, the notification server 140requests that an instant message be sent from a messaging server 170 tothe instant messaging address of User2. In this particular embodiment,the messaging server 170 is an instant messaging server. In the requestto the instant messaging server 170, the notification server 140specifies the content of the instant message, which is to include theupdated online status of User1. Lastly in FIG. 4, the instant messagingserver 170 transmits an instant message (notification message) to theinstant messaging client 155 of User2, e.g., “Steve Johnson is now inthe office.” Note, the instant messaging address of User2 is the addressof the instant messaging client 155 on the communication device 150 ofUser2.

In another representative implementation of one preferred embodiment ofthe invention, FIG. 5 depicts a service flow diagram for an embodimentof the invention for transmitting notification messages using emailtechnology. FIG. 5 shows the interactions between the notificationserver 140 & profile database 145 and the communication device 150 ofUser2, after a status change has been detected, as previously shown inFIG. 3. Here, the communication device 150 of User2 contains an emailclient program 155. The email client 155 could be installed on acomputer connected to the Internet or on personal digital assistant(PDA) or any other device capable of providing email communications.

In FIG. 5, the first action shown is the retrieval of the notificationpreferences specified in the profile of User2 from the profile database145. From the notification preferences, the email address of User2 isobtained. The profile database 145 then transmits the email address ofUser2 to the notification server 140. With the email address, thenotification server 140 requests that an email message be sent from themessaging server 170 to the email address of User2. In this particularembodiment, the messaging server 170 is an email server. In the requestto the email server 170, the notification server 140 specifies thecontent of the email message that is to include the new presence andavailability status of User1. Lastly, the email (notification) messageis transmitted from the email server 170 to the email client 155 ofUser2. The email address of User2 is the address of the email client 155on the communication device 150 of User2.

FIG. 6 represents the service flow diagram for another implementation ofone preferred embodiment of the present invention using wirelessapplication protocol (WAP) push technology. Particularly, FIG. 6 depictsthe interactions between the notification server 140 & profile database145 and the communication device 150 of User2, after a status change hasbeen detected, as previously shown in FIG. 3. Here, the communicationdevice 150 of User2 contains a WAP client. The WAP client could beinstalled on a mobile phone, a pager, a personal digital assistant(PDA), or any other device capable of providing WAP communications.

In FIG. 6, the first action shown is the retrieval of the notificationpreferences specified in the profile of User2 from the profile database.From the notification preferences, the WAP of User2 address is obtained.The profile database 145 then transmits the WAP address of User2 to thenotification server 140. With the WAP address of User2, the notificationserver 140 sends a notification message to the messaging server 170. Inthis particular embodiment, the message transmitted by the notificationserver 140 is encoded in wireless markup language (WML), and themessaging server 170 is a WAP push proxy. After the notification messageis received at the WAP push proxy 170, the notification message is sent(or “pushed”) to the communication device 150 of User2. The WAP addressis the address for the WAP client 155 on the communication device 150 ofUser2.

In an alternative implementation, FIG. 7 is a service flow diagram foranother preferred embodiment of the invention for transmittingnotification messages using voiceXML technology. VoiceXML is anapplication of the Extensible Markup Language (XML) which, when combinedwith voice recognition technology, enables interactive access to theInternet through a telephone or a voice-driven browser. FIG. 7 depictsthe interactions between the notification server 140 & profile database145 and the communication device 150 of User2, after a status change hasbeen detected, as previously shown in FIG. 3. Here, the communicationdevice 150 of User2 is a PSTN telephone or answering machine.

In FIG. 7, the first action shown is the retrieval of the notificationpreferences specified in the profile of User2 from the profile database145. From the notification preferences, the telephone number of User2 isobtained. The profiles database 145 then transmits the telephone numberof User2 to the notification server 140. Next, the notification server140 sends a notification message in voiceXML language to a messagingserver 170. In this particular embodiment, the messaging server 170 is avoiceXML gateway.

The notification message includes the new presence and availabilitystatus of User1. The voiceXML gateway 170 receives the notificationmessage and initiates a telephone call to the telephone number of User2.Upon an answer by the communication device 150 of User2, the voiceXMLgateway 170 converts the notification message in voiceXML to a voicenotification message that is delivered to the communication device 150of User2 over a PSTN telephone network.

Note, as long as the presence availability server 110 has a networkinterface and the number of users it has to support are small, a smallworkstation could operate as a presence availability server 110. Moreoften, though, the presence availability server 110 will be a higher endplatform, e.g. a Sun Microsystems Netra. The presence availabilityserver 110 has interfaces to all of the types of devices it supports.Over these interfaces, the presence and availability status informationof User1 is communicated to the presence availability server. For mostdevices a TCP/IP interface is sufficient. For some device types, awireless modem may be required. Along with the device interfaces, thepresence availability server may contain a database package to store thepresence and availability status information in (e.g. Oracle, Access,etc.), and another interface to allow the querying of a user's presenceand availability status. This second interface may be available overTCP/IP and preferably is in the form of a simple application programinterface (API) or a servlet.

It should be emphasized that the above-described embodiments of thepresent invention, particularly, any “preferred” embodiments, are merelypossible examples of implementations, merely set forth for a clearunderstanding of the principles of the invention. Many variations andmodifications may be made to the above-described embodiment(s) of theinvention without departing substantially from the spirit and principlesof the invention. For example, other messaging technologies such asshort message service (SMS) or fax messaging could be used to supportthe delivery of the notification messages. All such modifications andvariations are intended to be included herein within the scope of thisdisclosure and the present invention and protected by the followingclaims.

1. A system for providing presence and availability status informationof a first user to a second user, comprising: a presence availabilityserver for storing presence and availability information of a firstuser, wherein the presence availability server is configured to detect achange in the presence and availability status of the first user; and anotification server communicating with the presence availability server,the notification server configured to generate a notification messagefor the second user, wherein the first user designates a group ofindividuals, including the second user, that are eligible to receivepresence and availability status of the first user in notificationmessages and the group of individuals are provided a code that is to beused in electing to receive the notification messages, the notificationmessage containing current presence and availability status of the firstuser, wherein the notification server is to be notified by the presenceavailability server of a change in the presence and availability statusof the first user and the notification server is configured to send thenotification message to the second user unilaterally based upon thepresence status of the first user and not based upon a current networkstate of the second user, wherein the second user elected to receivepresence and availability status of the first status by previouslyregistering with the notification server and providing the code during aregistration process as proof that the second user was designated by thefirst user.
 2. The system of claim 1, wherein the notification server isfurther configured to generate the notification message for acommunication device of the second user.
 3. The system of claim 1,further comprising: a profile database coupled to the notificationserver, the profile database storing a profile of the second user,wherein the profile of the second user contains notificationpreferences.
 4. The system of claim 3, wherein the profile databasestores a profile of the first user, wherein the profile of the firstuser designates the second user as a monitor of the presence andavailability status of the first user.
 5. The system of claim 3,wherein: the profile database stores a profile of the first user; theprofile of the first user contains a userID and password of the firstuser; and the profile of the second user contains the userID andpassword of the first user.
 6. The system of claim 3, wherein thenotification preferences include an email address for the second user.7. The system of claim 3, wherein the notification preferences includean instant messaging address for the second user.
 8. The system of claim3, wherein the notification preferences include a WAP address for thesecond user.
 9. The system of claim 2, wherein the notificationpreferences include a phone number for the second user.
 10. The systemof claim 1, wherein the presence availability server is configured todetect the presence and availability status of the first user from acommunication device of the first user.
 11. The system of claim 10,wherein the communication device of the first user is a mobiletelephone.
 12. The system of claim 10, wherein the communication deviceof the first user is personal digital assistant.
 13. The system of claim10, wherein the communication device of the first user is a pagingdevice.
 14. The system of claim 10, wherein the communication device ofthe first user is a computer having an instant messaging client.
 15. Thesystem of claim 1, further comprising: a communication network fortransmitting presence and availability information from thecommunication device of the first user to the presence availabilityserver.
 16. The system of claim 15, wherein the communication network isthe internet.
 17. The system of claim 1, further comprising: a messagingserver communicating with the notification server, wherein: thenotification server sends a notification message to the messagingserver; and the messaging server forwards the notification message tothe communication device of the second user.
 18. The system of claim 17,wherein the messaging server is an instant messaging server.
 19. Thesystem of claim 17, wherein the messaging server is an email server. 20.The system of claim 17, wherein the messaging server is a voiceXMLserver.
 21. The system of claim 17, wherein the messaging server is aWAP push proxy.
 22. The system of claim 2, wherein the communicationdevice of the second user has an instant messaging client program. 23.The system of claim 2, wherein the communication device of the seconduser has an email client program.
 24. The system of claim 2, wherein thecommunication device of the second user has a WAP client program. 25.The system of claim 2, wherein the communication device of the seconduser is a PSTN telephone.
 26. A system for providing presence andavailability status information, comprising: means for storing presenceand availability status information of a first user; means for detectinga change in the presence and availability status of the first user,wherein the first user designates a group of individuals, including asecond user, that are eligible to receive presence and availabilitystatus of the first user in notification messages and the group ofindividuals are provided a code that is to be used in electing toreceive the notification messages; and means for sending a notificationmessage to the second user, wherein the notification message containsthe current presence and availability status of the first user and thenotification message is sent to the second user unilaterally based uponthe presence status of the first user and not based upon an onlinestatus of the second user, wherein the second user elected to receivepresence and availability status of the first status by previouslyregistering with a notification server and providing the code during aregistration process as proof that the second user was designated by thefirst user.
 27. The system of claim 26, further comprising: means forstoring a profile of the second user, wherein the profile of the seconduser contains notification preferences.
 28. The system of claim 27,further comprising: means for storing a profile of the first user,wherein the profile of the first user designates the second user as amonitor of the presence and availability status of the first user. 29.The system of claim 27, further comprising: means for storing a profileof the first user, wherein: the profile of the first user contains auserID of the first user; and the profile of the second user containsthe userID of the first user.
 30. The system of claim 26, wherein thenotification preferences include an email address for the second user.31. The system of claim 26, wherein the notification preferences includean instant messaging address for the second user.
 32. The system ofclaim 26, wherein the notification preferences include a WAP address forthe second user.
 33. The system of claim 26, wherein the notificationpreferences include a phone number for the second user.
 34. The systemof claim 26, further comprising: means for providing the presence andavailability status of the first user.
 35. The system of claim 26, themeans for sending comprising: means for transmitting the notificationmessage to a messaging server via the internet; and means for forwardingthe notification message from the messaging server to a communicationdevice of the second user.
 36. The system of claim 35, the means forsending further comprising: means for converting the notificationmessage into a format that is compatible with the communication deviceof the second user.
 37. The system of claim 35, wherein the messagingserver is an instant messaging server.
 38. The system of claim 35,wherein the messaging server is an email server.
 39. The system of claim35, wherein the messaging server is a voiceXML server.
 40. The system ofclaim 35, wherein the messaging server is a WAP gateway.
 41. A methodfor providing presence and availability status information, comprising:storing presence and availability status information of a first user,wherein the first user designates a group of individuals, including asecond user, that are eligible to receive presence and availabilitystatus of the first user in notification messages and the group ofindividuals are provided a code that is to be used in electing toreceive the notification messages; detecting a change in the presenceand availability status of the first user; and sending a notificationmessage to the second user, wherein the notification message containsthe current presence and availability status of the first user and thenotification message is sent to the second user unilaterally based uponthe presence status of the first user and not based upon an onlinestatus of the second user, wherein the second user elected to receivepresence and availability status of the first status by previouslyregistering with a notification server and providing the code during aregistration process as proof that the second user was designated by thefirst user.
 42. The method of claim 41, further comprising: storing aprofile of the second user, wherein the profile of the second usercontains notification preferences.
 43. The method of claim 42, furthercomprising: storing a profile of the first user, wherein the profile ofthe first user designates the second user as a monitor of the presenceand availability status of the first user.
 44. The method of claim 42,further comprising: storing a profile of the first user, wherein: theprofile of the first user contains a userID of the first user; and theprofile of the second user contains the userID of the first user. 45.The method of claim 44, wherein the notification preferences include anemail address for the second user.
 46. The method of claim 44, whereinthe notification preferences include an instant messaging address forthe second user.
 47. The method of claim 44, wherein the notificationpreferences include a WAP address for the second user.
 48. The method ofclaim 44, wherein the notification preferences include a phone numberfor the second user.
 49. The method of claim 41, further comprising:providing the presence and availability status of the first user. 50.The method of claim 49, wherein sending the notification message furthercomprises: converting the notification message into a format that iscompatible with a communication device of the second user.
 51. Themethod of claim 49, wherein the messaging server is an instant messagingserver.
 52. The method of claim 49, wherein the messaging server is anemail server.
 53. The method of claim 49, wherein the messaging serveris a voiceXML server.
 54. The method of claim 49, wherein the messagingserver is a WAP gateway.
 55. The method of claim 41, wherein sending thenotification message further comprises: transmitting the notificationmessage to a messaging server via the internet; and forwarding thenotification message from the messaging server to a communication deviceof the second user.
 56. The method of claim 41, further comprising:determining that the presence and availability status of the first useris being monitored by the second user.